This screen shot is a bit of a classic, and comes from the original King's Quest game, originally released in 1984:
Basically, each game lets you control a character that walks through a virtual world, one screen at a time, solving puzzles using a series of simple word commands (e.g. "TAKE KEY", "UNLOCK DOOR") Eventually you'd solve the final few puzzles and "win" the game, by becoming king, arresting a master criminal, or whatever.
It's hard to describe how much these games meant to me when I was young. But looking at them now, I can see that they're all quite lousy. The puzzles are silly, there are a million illogical ways to die in each, the graphics are iffy, and they're really all just pretty boring. Now, as per a legal agreement the site's owner made with Activision (the company that currently owns the rights to these games), only the first in each series is playable. And the graphics and games do improve over the years, but only slightly.
As I said, these games were so important to me in my childhood, and playing them opened me up to many interesting concepts and ideas. But I can see that my interactions were contingent on the particular contexts in which they took place. There are probably all kinds of games that I ignore now that will be just as cherished by today's kids.
Anyway, I guess the lesson is to trust your research more than you trust your memory.